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Howdy

<snip>

        Looks great; we use only real-cores to calculate on[1]; so I'd
mention
2 cores - rather than 4 threads. As such we got ~2x as fast with 2 cores
;-)

        Do you have a 4 core machine nearby - or better a 24 one ?


Thought I did. My test machine for this is described as:
Processor: AMD A10-5800k apu with radeon hd graphics x4
Memory: 7 GiB
Graphics: AMD Aruba
OS; Ubuntu 18.04.1 LTS
OS type: 64 bit
Gnome: 3.28.2
Disk: 308 GB

The files used came from a source patch referring to benchmarking OpenCL
functionality and includes 5 spreadsheets (xls all). Included is a python
script to run them as a batch and to write out recalc times.
So, if I understand correctly OpenCL doesn't mean much on this Linux
desktop, but I will be able to try, a little later, on a Windows 10 machine
also so I took that this would however still show the multi-corps threading
support.

I went back and reran the batch with as little else (easily possible)
running on the test machine. Performance increase varied based on the file,
ranging from ~76% - 30%
Stock History
6.0.7 : 13.9 sec
6.2.0 : 8.71 sec
                        62.68%
37.32% performance increase
Stocks Price Time Correlation
6.0.7 : 21.38 sec
6.2.0 : 9.57 sec
                        44.79%
55.31% performance increase

Energy Market
6.0.7 : 28.44 sec
6.2.0 : 12.43 sec
                        43.74%
58.36% performance increase

Ground Water Daily
6.0.7 :  92.52 sec
6.2.0 : 32.38 sec
                        35.00%
65.00% performance increase
Gross Profit Supermarkets
6.0.7 : 66.95 sec
6.2.0 : 20.15 sec
                        30.09%
69.91% performance increase

Building Design
6.0.7 : 50.14 sec
6.2.0 : 12.06 sec
                        24.05%
75.95% performance increase

The files each contain a write up as to what the data represents and what
statistical functions are being exercised.

More (on other follow up email) on these as this we go.

Best wishes,

Drew



        Lovely video though; I love the raw motorbike-with-hole-in-exhaust
ricer feel =)

        Good stuff,

                Michael.

[1] - hyper-threading is not our friend in the case of some heavy usage
and can make it slower ;-)
--
michael.meeks@collabora.com <><, GM Collabora Productivity
Hangout: mejmeeks@gmail.com, Skype: mmeeks
(M) +44 7795 666 147 - timezone usually UK / Europe


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